How much data can I migrate with each Document Migration license?Each Document Migration license allows up to 10GB of data to be migrated, per user.

What if a user has more than 10GB of data?By default, Document Migration projects consume one license per item (per user), which is equal to 10GB of data transfer per user, per license. If a user has more than 10GB of data, the migration will stop after 10GB of data has been migrated, and will not restart until you assign more licenses to the user. To avoid pausing a migration, configure the project to automatically consume more licenses per user. Read the What are some best practice guidelines when performing a document migration? article to decide which migration strategy works best for your particular scenario.